Can-forming machine.



4 R. G. CLARK. 02m FORMING MACHINE. APPLICATION FILED DEO.4, 191(1.

Patented Feb. 10, 1914 SHEETS-SHEET l.

ATTORNEY R. G; CLARK.

0m roximme mcnnm.

APPLIGATIOK FILED DEO.4, 1911.

1,086,700. Patented Feb. 10, 191;

7 SHEETS-SHEET 2.

IN l/EN TOR 40M M QM'YCZM,

W y A7TORNE;

R. G. CLARK. CAN FORMING MACHINE.

. APPLICATION FILED DEOA, 1911. 1 Q86 70Q Patented Feb. 10, 19M

7 SHEETS-SHEET 4.

WITNESSES! A V NTOI?\ ATTORNEY R. G. CLARK.

cm ronmme MAGHINE. APPVLIUAIION FILED 1330.4, 1911. V

Patented Feb; 10,- 1914.

'] SHEETS-1111 5.

WITNESSES:

l1 TTORIVEY R. G. CLARK,

CAN FORMING MACHINE.

APPLICATION FILED 1330.4, 1911 Patented Feb. 10, 191% '7 sums-sum 1.

' WITNESSES ATTORNEY ROBERT G. CLAQBK, 0% NEW YGRK, N.

Y., ASSIGNOB T9 EMAUS FOUNDRY dz MACHIN' COMPANY.

GAN-FQRMING MACHINE.

specification of Letters Patent.

gpplicaticnfiled December 4, 1911. Serial No. 663,879.

To all whom it may concern Be it known that 1, ROBERT G. CLARK, a citizen of the United States, and resident of the city of New York, borough of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Can-Forming Machines, of which the following is a specification.

This invention relates to a can forming machine used in the manufacture of sheet metal can bodies.

The object of the invention is to provide a simple and improved construction for a machine of this nature in which the speed or output and eficiency of the machine are materially increased and on account of an improved construction and arrangement of parts the cost of the machine is decreased.

' Among the novel features of the invention is the feeding mechanism which, by reason of its peculiar construction, permits an extremely rapid feeding of the sheet metal blanks and as the output of the machine is necessarily limited by the speed with which the blanks may be fed, this feature contributes materially to increasing the output.

A continuous performance'of the several consecutive operations is provided for, so that 'as one sheet metal blank is-advanced from one operation to another, another blank is immediately fed forward taking its place, consequently no time is lost while the several 0 erations are being performed upon any one blank. p I

IOther features of the construction are foundin the notching mechanism, in which rotary cutters are used, and also in the edgingland forming mechanism by which the hook-is formed in two operations, first by a teary bending tool and completed by an oscillating too The above mechanism is provided with adjustable features whichrenable blanks of different sizes to be used in the same machine.-

Various other novel features of the invention will appear in connection with the description of the machine embodying the invention which is shown in the accompanying drawings, the operation of which Wlll be described more fully hereinafter and the novel features 8' ifically deli l in the claims.

In the swings like parts in the several views have been given the same reference numerals.

Figure 1 is a side e evation of can-forming machine. Fig. 2 is an end view taken from the left of Fig. 1. Fig; 3 is a plan view" Patented Feb. 1o,1914.

taken on the line 5-5 of Fig. 3. Fig. 6 is a. 1

view similar to Fig.5, showing one step in the operation. Fig. 7 is an'enlargedfrag- .mentary elevation, taken on the line 77 of Fig. 3 and Fig. 6. Fig. 8 is an enlarged fragmentary elevation, partially in section, on the line 8-8 of Fig. 3. Fig. 9 is an en larged fragmentary elevation, taken on. the line 9-9 of Fig. 3. -Fig.,10 is an enlarged fragmentary elevation, taken 'on the line 10-10 of Fig.3. Fig. 11 is an enlarged fragmentary elevation, taken on the line 1111 of Fig. 3. Figs. 12, 12? and 12 are perspective viewsof one endof the blank, showing the consecutive operations thereon of notching, edging and forming the hook. Fig. 13 is a fragmentary'elevation on the line 13-13 of Fig. 3. Fig. 14 is a flag mentary elevation on-theline 14.-14: 0f Fig. 3. Fig. 15 is a ,fragmentary elevation on the line 15 15 of Fig. 3. Fig. 1-6 is afragmentary elevation on the line 16'16-of Fig. 3. Fig.1] is a fragmentaryelevation'on the line 17 -1? of Fig. 3. 3 V 1 31 A suitable hasecr'bed is shownat 1, pro;

vided at the front andreargw ith uprights or supports 2 and 3, respectively; upon which the t ble dis mounted. At the forward end' of the able 4 is a hopper base 5, mounted at the right and a similar base 6 at the left upon which the hopper frames 7 and 8 are mounted and adjus'tably secured bymeans of the bolts 9-in the slots 10. The forward frames are formed in one piece with the I left buckling jaws are shown at 11' andv 12, respectively, each of whichis provided on its upper side with a shoulder slightly smaller than the thickness of the blank and with a downwardly curved surface extend-.-

ing therefrom upon which the blanks These buckling jaws 11 and 12 are oscilfated horizontally upon the side supports'56 and 56f by means of the eccentrics 13 and 14, respectively, these eccentrics being no I the sprocket chains.

mounted upon and driven by the right and left shafts 15 and 16, respectively. A sprocket 17 on the shaft 15 is driven by the sprocket chain 18 from the intermediate shaft 19, which in turn is driven by the sprocket chain 20 from the main driving shaft 21.. In a like manner the shaft 16 is driven through the intermediatsshaft 22 from the main driving shaft 21; The shafts 15 and 16 are arranged to be moved in-v wardly and outwardly with the'mechanism operated thereby to bring the same in position to operate upon -blanks of different length, aswill be explained more fully hereinafter, and the arrangement of the inter-' 'mediate shafts and sprocketchains just described and shown in Fig.2, provides for this movement while preserving the distances between centers of the driving sprockets to insure the proper operation of Referring to Fig. 1, the main driving shaft 21 is driven through the beveled gears gen the buckling jaws.

16', which are driven from the main shaft as already described, cause the buckling we 11 and 12 to be oscillated inwardly to-'- ward each other from the position shown in Fig. 5 to the position shown in Fig. 6. This moi-'einent causes the lower blank 29 to be bent or buckled downwardly at its central portion until it rests upon thecentral support 34, in which position it is then enga es by the first set of feed bar dogs 31 which are'carried by the feed bar 32 over .the :ijpp'er surface thereof, the feed bar be- .ing 111 turn oscillated in the mannerwhich -will "be described more fully hereinafter.

The; do s 31 engaging the blank at its for- 'wa;rdedge draw the same toward the rear oft-the machine, the outer ends of the blank sliding off from the buckling jaws 11 and 12 upon, the side supports 35 and 35, upon which they rest and are advanced for the succeeding operations. The first portion of this operation is shown in Fig. 7 while the progressive movement thereof is shown in Figs. 8, 5 and 6 successively. In Fig. 6 the blank-29 isfshown as having been advanced to the second position while the second blank 30 has been buckled downwardly and is abstra ts engaged by the jaws 31 and "adiianeed in a like manner.

. The next step the operation is shown in Fig. 9' where the. blank hasibeen engaged by the dogs 33 and"advancedfintoiposition to be operated upon by the notchingt'device.

The notching mechanism comprises'aidie 36 at the right, a rotary notchin cutter 37 mounted upon and driven by th and a cap 38 secured upon the die 36 and fastened to the side support 56 bythe bolts '39. A spring pressed pressure foot 40 is positioned in the cap 38 to hold this end of the blank in position while the same is operk ated upon by the rotary cutter 37, which operation consists 'in notching the end of e'shaft 15 the blank in theformshown in Fig. 12.

Similar notching mechanism is provided at the "left, comprising a die 41, which also forms a cap, a rotary cutter 42 mounted upon and driven by the shaft 16 and bolts 43 securing the die 41 and the lower half 44 to the side support -56. A pressure foot 45' is positioned in the lower half 44 and holds the left hand end of the blank in position against the die 41 as the same is operated upon by the cutter 42. The direction of rotation of the cutters 3'7 and 42 is the same but they operate upon the blank in opposite directions, that is, the one at the right moves downwardly while the one at the left-moves upwardly With-respect to the blank.

The'next step in the operation is shown in Fig. 10, the blank being advanced to this positionby another set of dogs 33 ,,in which position the edging and hook forming operations upon the blank are performed. The

edging device comprises a bending die .46

-at the right, a bending die cap 47 and a rotary bending tool 48' secured to and driven by the shaft 15. The cap 47 and die 46 are secured to the side support 56 by means of the bolts 49. A spring pressed pres: sure foot 50 is positioned in the cap 47 and its holds the end of the blank against, the die 46 while the same is operated upon by the bending tool 48. The bending tool 48 bends this end of the blank downwardly at substantially right angles in the form shown in Fig. 12*. A similar construction is provided at the left, comprising a bending die and cap 51,'a bending tool 52 and bolts securing the bending die and the lower half .54 to the side support 56. A spring pressed pressure foot is positioned in the lower half 54 and holds this end. of the blank against the bending die 51. The operation upon this end of the blank is performed simultaneously with that on the opposite end and in a similar manner, with the exception that the bending tool 52 bends this end ofthe blank up instead of down, as shown in Fig. 10.

The next step in the operation is shown in Fig. 11, the blank being advanced to this position by-the dogs 33 in which position the hook is formed. The hook forming device comprises a die 59 at the right, acap and the hook forming tool 61, which is pivotally attached to the cap 60 and operated by the eccentric 62 mounted upon and rotated by the shaft 15. A spring 63 holds the forming tool 61 in engagement with the eccentric 62. Bolts 65 secure the die 59 and the cap 60 to the side support 56.

i The hook forming mechanism at the left is similarly constructed and comprises a die andcap 66, a hook forming tool 67 operated by the eccentric 68 secured to and driven by the shaft 16. A spring 69 in the cap 66 holds the hook forming tool 67 in engagement with the eccentric 68. Bolts 7 O secure the die and cap 66 and the lower half 66. with the Side support 56. A spring pressed pressure foot 71 is positioned in the lower half 66 and holds this end of the blank against the die 66. The hook. forming tool 67- is pivotally mounted in. the lower half 66 and forms the hook on this end of the plate on the upper side thereof in a. similar manner to that on the opposite end of- 4 the blank formed by the hook forming mech anism on the right just described.

The side supports 56'and 56 carry the hopper, buckling jaws, notching and edging mechanism and the hook forming mechanism, together with-the shafts 15 and 16 which operate the same. These side sup ports are adjustable to accommodate blanks of different sizes by means of the adjusting screws 57 and 57 operated by the hen wheels 58 and 58, shown in Figs'3 and 10. Mounting these several devices upon a single'support on each side provides for a simple adjustment of the same and a more perfectialinement is secured. By operating all of the mechanism from the two parallel shafts, the construction is greatly simplified.

The blank is next advanced for the formin operation, which is accom' lished by provi g curved inclinedmem rs, 72 at thev right-and 7 3 at the left, and a horn 74. This portion of the operation is clearly shown in Figs, 13, 14 and .15. The blank is caused to pass over the inclines 72 and 73 by the movement of the feed bar 32 and the dogs carried thereby in a like manner asit has been advanced through the preceding opera: tions. The blank is first bent upwardly at its ends, as shown in Fig. 13, and finally. Wrapped around the horn 74, as shownin.

Figs. 14 .and 15. When the blank has reached -the position shown'. in Fig. {142, it: is advanced by the right and left feed' bars 1 75 and 76 carried by the horn 74, said right hand feedbar 7 5 being provided with dogs. 77 and the left hand feed bar 7 6 provided I with dogs 78, in the-manner which will be. well understoodby reference to the draw in I Ti Figs. 1 and 3, the operating mechanism for the feed bars is clearly shownand com:

prises the cross head 79 attached to the'feed bar 32 and from which the feed bars 75 from a crank disk attached to the drivingshaft 25. The blank now having been advanced over the inclines 72 and 73 and Wrapped around the born 74, the hooks, at the end of the same have been brought into engagement in the position shown in Fig. 15, also shown in enlarged scale and more in detail in Fig. 16. In this position the joint or side seam is closed by means oi the bumping device shown in Figs. 16 and 17. The bumping device comprises a bump ing steel 85, which is mounted upon the rear upright 3 by means of bolts and bushings 86, so as to permit a reciprocating motion thereof. The spring 87 normally holds the bumper steel in its upper osition in which positionit is engaged by t e bumper screw 88, adjustahly carried by the bumper arm 89 (shown in Fig. 4) which'is pivotally mounted on the upright frame upon a fined.

shaft 90 and is operated by the eccentric arm 91 and an eccentric 92 on the shaft 2-1. The

adjustable guide 93 is mounted upon the right incline 72 by means of the bolt 94, as shown in Fig. 16., A. guide 9531s resiliently held against the blank by means of the spring 96 and positioned on the upper side of the horn 7 1, as shown in Fig. 16, for guiding this end of the blank while the. hooks are being engaged and also'for holding the same in position to be operated upon by the bumper steel 85, whenthe joint is I closed, as shown in Fig. 17. A further movement of the feeding bars delivers the can body completely formed from the. horn. The horn 7a and the parts carried thereby, the body forming incline members72 {devices to. accommodate blanks of different ilengths has already been described.

It will thus-beseen .tha-t'the machine em' bodying this invention provides for a con tinuous operhtion of the consecutive operations and that on account of the positive and simple construction. of thefeeding mechachine' is increased.

.nism-the output and eiliciencyof the ma- &

widely different embodiments of my invention designed without departing from the scope of the appended claims, I intend that all'matter contained in the above description or shown in the accompanying drawings shall be interpreted as illustrative merely of an operative embodiment of my invention and not in a limiting sense.

What I claim is:

1. The combination in a can forming machine, of a hopper, a. pair of buckling jaws upon whichthe blanks in said hopper are supported at their opposite ends, said jaws being formed to successively engage the wedge of the blanks and move inwardly to cause the same to bebuckled into position to be engaged by the feeding mechanism,

means for operating said buckling jaws, and

feeding mechanism for feeding said blanks successwely into the machine. a 2. The combination in a can forming ma chine,- of a hopper, buckling jaws each pro- .vided with a shoulder adapted to successively engage the blanks in said hopper and cause the same to be buckled into position to be engaged by the feeding mechanism, means for operating said buckling jaws, and feeding mechanism. for feeding said blanks successively into the machine.

80 3. The combination in a can forming machine, of a hopper, buckling jaws each'provided with a'shonlder and a downwardly curved surface upon which the blanks rest adapted to successively engage the blanks in said hopper and cause the same to be buckled into position to be engaged by the feeding mechanism, means for operating said buckling jaws, and feeding mechanism for feeding said blanks successively into the 40 machine.

4. The combination in a can forming machine, of a hopper. buckling jaws positioned at opposite ends of said hopper and adapted to successively engage the blanks in said 46 hopper and cause the same to be buckled into position to be engaged by the feeding mechanism, eccentrics mounted upon shafts at opposite sides of said machine positioned to engagesaid buckling jaws, and feeding 50 mechanism for feeding said blanks successively into the machine.

5. The combination in a canforming machine, of an adjustable hopper adapted to receive blanks of different sizes, adjustable buckling jaws adapted to successively engage the blanks in said hopper and cause the same to be buckled into position to be engaged by the feeding mechanism, means for operating said buckling jaws, and feeding mechanism for feeding said blanks successively int-othe machine.

6. The combination in aj can forming machine, Yof a hopper, buckling jaws adapted :to successively engage the blanks in said .Cbhopper and cause the same to; be buckled .ing a rotary bending tool adapted to into position to be engaged by the feeding mechanism, eccentrics and operating shafts for operating said jaws, said operating shafts being driven through intermediate shafts from a main shaft, and feeding mechanism for feeding said blanks successively into the machine.

7. The combination in a can forming machine, of not'ching mechanism comprising a rotary notching cutter, a die and cap in which said cutter rotates formed for hold ing the blank in position to be operated upon by said cutter, andmeans for feeding the blanks successively to said notching mechanism.

8. The combination in a can forming machine, of notching mechanism comprising a rotary notching cutter, means including a .die and cap and a spring pressed pressure foot mounted therein for holding the blank. in position to be operated upon by said outter, and means for feeding the blanks successively to said notching mechanism.

9. The combination in a can forming machine, of hook forming mechanism com risnd the end of the blank at right angles, means for holding theblank stationary While being operated upon bysaid tool, a reciprocating hook forming tool adapted to engage the. aforesaid bent portion of the .blank' and further bend the same to form the hook, means for holding the blank stationary while being operated upon by said tool, means for operating" said tools, and means for feeding the blanks successively'thereto.

10. The combination in a can forming machine, of hook forming mechanism comprising a pair of rotary bending tools .positioned to operate upon opposite ends of a blank, means for holding the blank in position to be operated upon by said tools, a pair ofreciprocating hook forming tools positioned to operate upon opposite ends of the blank, means for holding the'blank. in position to be operated upon by said tools, means for operating said tools, and means for feeding the blanks successively thereto.

11. The combination in a can forming. machine, of hook forming mechanism comprising a rotary bending tool, a die and cap for holding the blank in position to be operated upon by said tool, a reciprocating hook forming tool, a die and cap for holding the blank in position to be operated upon by said tool. means for operating said tools, and means for feeding the blanks successively thereto. 1

1.2. The combination in a can forming machine, of hook forming mechanism comprising a rotary bending tool, a die and cap in which said-bending tool is rotated for holding theblank in position to'be operated 'upon bysaid tool,'.a reciprocating hook 139 forming tool, a die and capin which said tool reciprocates for holding the blankin position to be operated uponby said tool, means for operatin' said tools, and means for feeding the blan successively thereto.

13. The combination in a can forming machine, of hook forming mechanism comprising a pair of rotary bendmg tools adjustab y mounted with relation to the blank and adaptedto operate upon opposite ends thereof, means for holding the blank in po- 'sition to be operated" upon by said tools, 'a

pair of reciprocatinghook forming tools adjustabl mounted with relation to the blank an adapted to' operate upon oppositeends thereof, means for holding the blank in position to be operated uponby said'tools,

said tools, a pair of, reciprocating hook,

forming toolspositioned to operate. upon op:

' posite ends of the blank, means for holding. 1

the blank in position to be operated upon by said tools, means .for operating said tools, and'means for feedingthe blanks successively thereto.

15. In a can forminfinmachine, incoinbination,a ho per, buc g qbuckle the b anks in sai sively into position'to be advanced B the feeding means, notching mechanism,e mechanism, hook fo meclianism,'com-' jaws adapted'to hopper succese mon operating means or opera said mechanisms and bucklin jaws, and eeding Y nation, a hopper, buckling jaws adapted to means adapted to e blanks fi'om said hopper into position to be operated upon successively by said mechanisms.

16. In a can forming machine, in fl bi.

the

buckle the blanks in 'said hopper successively into position to be advanced by the feeding means, notchingmechanism, edging mechanism, hook forming mechamsm, common operating means for operating .said' mecha-' nisms and buckling jaws, said hopper, buc-' khngxjaws, mechanism and operating means adjustably mounted to accommodate beulig. bla s of difierent sizes, means for adjusting the same, and feedin ,55 v means adapted to feed the blanks from sai hopper into sitio'nto be. operated upon successively .by

said mechanisms.

, 17. In a can forming machine, in -combi-, nation, a hopper, buckling jaws adapted to buckle the blanks in Sflld hopper succes 1 sively. into-position to be advanced by the feedmg means, 'notching mechanism,'edging mechanism, hook -forming mechanism, common operating means foroperating said mechanisms and buckling jaws, mechanisms and operating means being mounted upon two adjustable supports at either side of- 'the1machine,

ingmeans adapted to feed the Blanks from Said ,..hopper into position to be operated upon successive] by said mechanisms.- 1 15 nation, a hopper, buckling jaws adapted to l 18. In a can ormin'g machine, in combi-- ucklmg jaws said hopper,"

10 means for adjusting said supports, and feed-5' buckle the blanks in said hopper successively into positlon to be advanced bythe'feeding means, not hing mechanism, edging mecha j nism, hook forming mechanism, two parailel operating shafts foroperating said mechanisms'andbuckliiigja' s and feedin w means' adapted to feed. a blanks fromfsai hopper into position to operated upon successively b said mechanisms.

.Signed'. at ew York c ty, in the county of and State-of New York, 2Qthday of lNov.-, 1911. ROBERT G. CLARK. Witnesses: 

